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Challenge Grifo Cross Open Tubular Tire (Clincher) (Black/Brown, 33-mm) : Amazon.co.uk: Sports & Outdoors
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Challenge Goes Big with 38mm Cyclocross Tubulars and Tubeless Tires, Unveils Team Edition Handmade TLR - Cyclocross Magazine - Cyclocross and Gravel News, Races, Bikes, Media
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